How the test is performed

How to prepare for the test

How the test will feel

Why the test is performed

Normal Values

What abnormal results mean

What the risks are

Special considerations

References

Version Info

Last reviewed on 10/1/2009

David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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